Abstract: In certain embodiments, cryptographic-chain-based verification of postage transaction records may be facilitated. In some embodiments, a customer computer system may obtain a customer private key associated with a customer from a secure local storage at the customer computer system. The customer computer system may obtain (i) a first vendor digital signature derived from a first postage transaction record and (ii) a second postage transaction record. The customer computer system may create a customer digital signature based on (i) the customer private key, (ii) the first vendor digital signature, and (iii) the second postage transaction record.

Abstract: Systems, methods, and computer-readable storage media of exchanging digital assets using a public key cryptography framework. One method includes storing a plurality of digital assets on an internal ledger, and receiving a signed exchange request signed by a private key of a public and private key pair associated with a digital asset on the internal ledger, wherein the signed exchange request includes a destination address of an inter-provider ledger. The method further includes providing, to the inter-provider ledger, a public key of the public and private key pair based on interfacing with the destination address of the inter-provider ledger via a first API, and determining, from the inter-provider ledger, the signed exchange request was verified. The method further includes updating the internal ledger by removing the public and private key pair, and updating a central ledger by interfacing with a central address of the central ledger via a second API.

Abstract: A payment system implemented on a mobile device authorizes and processes transactions. The mobile device generates a public-private key pair and receives payment information. The private key and the payment information are split into a local and a remote fragment. The public key, a private key fragment, and a payment information fragment are sent to a secure payment system, and the other fragments are stored on the mobile device. When a transaction is received by the mobile device to authorize, the mobile device sends a payment fragment to the secure payment system and receives a private key fragment from the secure payment system. The mobile device authorizes the transaction using the private key, recovered from the private key fragments. The secure payment system verifies the transaction using the public key and processes the transaction using the recovered payment information. Additional techniques to process transactions using data splitting are disclosed.

Abstract: Systems and methods for fast and efficient retrieval of NFT ownership information are provided. An exemplary method includes initializing a mirror blockchain by making a copy of an NFT blockchain; initializing an ownership transaction table and an NFT ledger from a mirror NFT blockchain by processing the mirror blockchain from a beginning block to an end block; periodically update the mirror blockchain with new blocks from an NFT blockchain thereby forming a new end block; processing ownership transaction events that modify NFT ownership in the new blocks up to a fixed offset from the new end block; updating the ownership transaction table; updating the NFT ledger; receiving a request for all NFTs owned by a crypto-wallet address; generating a response with the NFTs owned by the crypto-wallet address from the NFT ledger; selecting an NFT group; and verifying the NFT ledger against the NFT blockchain ownership.

Abstract: A payment method is provided. The method is used in a payment system and includes: receiving, by a monitoring device, a contract corresponding to a transaction transmitted by a smart contract device and receiving status information of a plurality of unmanned control devices, wherein the transaction is created by a user; transmitting, by the monitoring device, the contract and the status information to a residual service contract device; and receiving, by a first unmanned control device of the unmanned control devices, service information generated by the residual service contract device according to the contract and the status information and providing services to the user according to the service information.

Abstract: A device receives, from a transaction device, transaction data associated with a transaction of a user logged into the transaction device, and receives information indicating a selection of an abort transaction mechanism to cause the transaction to be canceled concurrently with the user being logged out of the transaction device. The device provides, to a user device associated with the user, a notification indicating that the transaction was canceled and that the user was logged out, and determines whether a response, indicating that the notification was received by the user and indicating a reason for utilizing the abort transaction mechanism, is received from the user device within a threshold period of time. The device provides an alert message to an emergency point of contact for the user when it is determined that the response is not received from the user device within the threshold period of time.

Abstract: Systems and methods for providing high performance access to NFT metadata including ownership information. An example method requests NFT metadata from a server that has cached NFT metadata extracted from a mirror NFT blockchain. Periodically, new blocks that have been added to an NFT blockchain are added to the mirror blockchain and processed to update a cache with metadata modifications. Additionally, the method includes requests for NFT ownership information. An ownership transaction table is generated and updated from the mirror blockchain. Ownership request can include requests for all the NFTs owned by a crypto-wallet address.

Abstract: A method and apparatus for secured, multi-lateral, assured data transfer over a computer network for the assured exchange of data between counterparties related to qualifying transactions, the method being accomplished by a distributed computing system including a distributed ledger platform and an off-chain data host platform. On-chain authorization tokens are used to track data access rights, enforce access policies, and control distribution of encryption keys.

Abstract: An asset trading system utilizing a distributed ledger and configured to: when a creation request to create a digital fund token representing at least one share of a fund having a plurality of different assets (i) is received, (ii) is electronically signed with a private key associated with a first addressed account, and (iii) indicates a composition of the at least one share of the fund: place the plurality of different assets represented by the at least one share of the fund into an escrow account; create the digital fund token, wherein the digital fund token indicates the composition of the share of the fund; and record the creation of the digital fund token on a distributed ledger.

Abstract: Provided are a method and apparatus for operating a blockchain system, a device and a storage medium. The method is described below. To-be-processed blockchain data is acquired through a kernel engine of the blockchain system. The to-be-processed blockchain data is processed through the kernel engine, a consensus component call request is generated according to a consensus component interface during a processing process of the to-be-processed blockchain data, and a corresponding consensus component is called according to the consensus component call request, where the corresponding consensus component is configured to execute a consensus mechanism between blockchain nodes.

Abstract: Systems and methods for storing and managing blockchain transactions may include receiving a transaction request on a distributed ledger transaction machine that is part of a distributed ledger network including distributed ledger transaction machines, each storing an identical copy of a blockchain. The method may include extracting percentage allocations for each transaction in the transaction request as well as a set of identifying information indicating a charitable owner for at least one of the transactions. The method may further include recording a first transaction in a block on the distributed ledger transaction machine, which can be freely exchanged and transferred on the distributed ledger network and is unmarked, and a second transaction on the block on the distributed ledger transaction machine, including restricting the second transaction via a marking in the second transaction's data where the marking enables a centralized machine to control access and use of the second transaction.

Abstract: A method and system for detecting and preventing Internet fraud in online transactions by utilizing and analyzing a number of parameters to uniquely identify a computer user and potential fraudulent transaction through predictive modeling. The method and system uses a delta of time between the clock of the computer used by the actual fraudulent use and the potentially fraudulent user and the clock of the server computer in conjunction with personal information and/or non-personal information, preferably the Browser ID.

Abstract: The method 10 for mobile cryptocurrency wallet connectivity can include facilitating a blockchain transaction S100 and establishing an initial connection between a mobile client and a web client S200. The system 20 for mobile cryptocurrency wallet connectivity can include a browser 110, one or more websites 120, a web client 130, a mobile application 140, and a backend server 150.

Abstract: Disclosed is a system, method, and computer program product for determining solvency of a digital asset exchange system. The method includes identifying a plurality of blockchain addresses corresponding to a plurality of users of the digital asset exchange system, generating a first commitment to an amount of digital assets corresponding to the plurality of blockchain addresses, generating a second commitment to a balance of each user of the plurality of users, generating a first component of a zero-knowledge algorithm configured to receive, as input, the first commitment, and to output a value generated based on each public key, generating a second component of the zero-knowledge algorithm configured to receive, as input, the second commitment, and to output a value generated based on each user balance, and determining, with at least one processor, that the digital asset exchange system is solvent based on the zero-knowledge algorithm.

Abstract: The purpose of the present invention is to provide a new data utilization system in which, while an individual independently uses and utilizes one's own personal data, security and anonymity of the data can be effected.

Abstract: An industrial service device fleet management system implements an organized and easy to use methodology to manage the digital content stored on each of a plurality of portable or stationary devices used in a plant, such as portable maintenance devices, to assure that each of the portable devices receives or implements only the content that it is supposed to have and is upgraded at the appropriate time to include new content, features, etc. The fleet management system includes a memory for storing information related to the fleet of portable or stationary devices including device identifications, device descriptions, end user names and privileges, the current content of each of the portable devices, and templates defining configuration parameters for the portable or stationary devices. The system also includes a content downloader that obtains, stores, and downloads content (such as software and firmware upgrades, additional features, applications, drivers, knowledge articles, etc.

Abstract: An example operation may include one or more of receiving, by a risk score module, a blockchain transaction proposal, obtaining transaction proposal data, obtaining external data, computing a risk score from the transaction proposal data and the external data, comparing the risk score to a risk score threshold, providing an endorsement decision, based on the comparison, and one of endorsing or rejecting the transaction proposal.

Abstract: A composite cryptographic data structure is described, and corresponding methods, systems, and computer readable media. The composite cryptographic data structure is instantiated based on an underlying set of cryptographic tokens (e.g., blockchain/distributed ledger tokens) that, in some embodiments, are transferrable through on-chain transactions established on one or more distributed ledger networks. Identity validation, in some embodiments, may occur at one of composite cryptographic data structure instantiation or composite cryptographic data structure redemption, or both, through the use of a whitelist or a blacklist data structure.

Abstract: Technologies for conversion and transmission of data files from a mainframe computing system for big data ingestion. Secure electronic payment transactional data is extracted in a mainframe format, such as Extended Binary Coded Decimal Interchange Code (EBCDIC). The electronic payment transactional data is converted to American Standard Code for Information Interchange (ASCII) code prior to transmission to a big data analytics computing system. The converted data is encrypting and transmitted for ingestion into a big data analytics computing system.

Abstract: A method of issuing an electronic voucher by an issuer is provided. The method includes steps of: (a) creating and registering a transaction including a voucher data, a public key and a signature value of the issuer, with a private blockchain database, providing the issuer with a PrivTxid locating the transaction in the private blockchain database, and updating and registering value information including a balance of the voucher data with a BDB; and (b) acquiring and registering a representative hash value calculated using a specific hash value, which is a hash value of the voucher data, the public key, and the signature value, and its corresponding hash values which include a hash value of a delta_n including all balances of all vouchers, identifiable by all PrivTxids locating their transactions, with a public blockchain database, and acquiring a Txid locating the representative hash value in the public blockchain database.